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Sampras held a wet towel on his face during a break in the French Open semi-final against Yevgeny Kafelnikov in Paris, June 7, 1996. Kafelnikov defeated Sampras 7-6 (7-4), 6-0, 6-2.

Sampras held a wet towel on his face during a break in the French Open semi-final against Yevgeny Kafelnikov in Paris, June 7, 1996. Kafelnikov defeated Sampras 7-6 (7-4), 6-0, 6-2. (Lionel Cironneau / AP)

Sampras held a wet towel on his face during a break in the French Open semi-final against Yevgeny Kafelnikov in Paris, June 7, 1996. Kafelnikov defeated Sampras 7-6 (7-4), 6-0, 6-2.